Cookie Dough Crust: Combine flour, sugar, lemon zest, egg yolk, and butter in a bowl. With your fingers work the ingredients together until they are thoroughly mixed and can be gathered into a ball. Dust with flour and refrigerate for one hour. Preheat oven to 400 degrees. Spread the dough evenly over the bottom of a 9-inch springform pan; with your hands press dough on bottom on pan, and up to a height of 2 inches on sides. Bake for 10 minutes and cool to room temperature.

Cheesecake Filling: Preheat oven to 475 degrees. Combine sugar, flour and salt in a small bowl. Place all of the cheese into a large bowl, and gradually add flour mixture, beating on low until smooth .Add grated zest; Add eggs and egg yolks one at a time, beating after each. Blend in heavy cream. Pour into prepared crust and bake for 15 minutes. Reduce heat to 225 and bake 1 hour longer. Remove from oven and let stand on cake rack, away from drafts, until cool. Chill overnight.